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	Determination of cross-relaxation efficiency based on spectroscopy in thulium-doped rare-earth sesquioxides
	L. Zheng; H. Wu; L. Zhang; Y. Luo; G.-H. Pan; X.-J. Wang; Z. Hao and J. Zhang
	2022
ISSN号	2728842
DOI	10.1016/j.ceramint.2022.11.301
英文摘要	Tm3+ doped cubic rare-earth sesquioxides have been recognized as excellent laser materials operating at 2 m. Upon 3H4 excitation by commercially available laser diode around 800 nm, a cross-relaxation (CR) process enables efficient Tm3+ laser originated from 3F43H6 transition. The CR process, (Tm1:3H4, Tm2:3H6) (Tm1:3F4, Tm2: 3F4), cuts one excitation photon into two photons of 2 m with quantum efficiency of 200%. As a result, efficient CR is needed. The CR efficiency is usually determined based on the emission lifetime of 3H4. However, the CR between the nearest Tm3+ is too fast to emit, overrating the emission lifetime and underrating the CR efficiency. Here, we propose a spectroscopic method for determination of CR efficiency based on emission intensity ratio. Tm3+ doped cubic Y2O3, Lu2O3, Sc2O3, YScO3, LuScO3 and YLuO3 sesquioxides are prepared by solid-state reaction. Near infrared emission spectra and decay curves are studied as a function of Tm3+ concentration. The relationship between CR efficiency and emission intensity ratio is established. Large Stark splittings of 1002 cm1 and 511 cm1 are observed for the 3H6 ground state and the 3F4 excited state of Tm3+, respectively in Sc2O3:Tm3+, leading to a long-wave emission at 2.15 m. The comparison of these six samples reveals that Sc2O3: Tm3+ has the largest CR parameter and Lu2O3:Tm3+ has the highest quantum efficiency for populating the 3F4 from the 3H4 at the same Tm3+ concentration. 2022 Elsevier Ltd and Techna Group S.r.l.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66552]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. Zheng,H. Wu,L. Zhang,et al. Determination of cross-relaxation efficiency based on spectroscopy in thulium-doped rare-earth sesquioxides[J],2022.
APA	L. Zheng.,H. Wu.,L. Zhang.,Y. Luo.,G.-H. Pan.,...&Z. Hao and J. Zhang.(2022).Determination of cross-relaxation efficiency based on spectroscopy in thulium-doped rare-earth sesquioxides..
MLA	L. Zheng,et al."Determination of cross-relaxation efficiency based on spectroscopy in thulium-doped rare-earth sesquioxides".(2022).

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